NSO (Non-Qualified Stock Option)
A stock option that anyone — employees, advisors, or contractors — can receive, but the difference between the strike price and the stock's value is taxed as regular income the moment you exercise.
Quick Answer
Do I owe taxes immediately when I exercise an NSO?
Yes — the spread between your strike price and the current fair market value is taxed as ordinary income the moment you exercise, typically with taxes withheld the same way as a paycheck.
- Withholding happens at exercise, not at eventual sale
- Only gains after exercise get capital gains treatment
- Budget for the tax bill before you decide to exercise
The Lovie Advantage
Lovie calculates the exact taxable spread at exercise using your live 409A value, instead of a manual estimate.
See how this connects to Vesting Cliff. For the formal definition, see the IRS's Form 8949 instructions for reporting stock sales.
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